Automatic stop-motion for knitting-machines.



Np.894,698. f f PATENTED JULY 28, 196%.

- J.-B.*R'HODES.,

AUTOMATIG STOP MOTION FOR KNITTING MAGHINES.

APPLIOATION FILED SEPT. 30, 1907.

a SHEETS-SHEET 1.

No. 894,698. PATBNTED JiTL YFZS, 1908;

' J. B. RHODES. AUTOMATIC STOP MOTION FOR KNITTING MACHINES.

APPLI UATION FILED SEPT. 30. 1907.

' 3 SHEETS-SHEET Z.

Wilma/00% 1|} .No.s94,e98., PATENTED JULY 28,1908.

J.B.RHODE S.

AUTOMAT IG STOP MOTION FOR KNITTING MACHINES.

' APPLICATION FILED s n. 30.1907.

3 SHEETS-SHEET 3.

mun

- overthe device o f as - meral 1- indicates a controlling or sup I suchas will enable ot -the yi 5 is a similar view taken arm [4, constitut'f; "STATES omen.

JOSEPH B R'HoD-Es, 0F fiARRIsBURGpPENNsYLvANIA.

ino. 394,698.

Be it known that I,' JosEPn B. RHODES, a citizen of .the United States,residing at Harrisbur in the county of Dauphin and State of ennsylvania,have invented certain'new and useful Im rovements in AutomaticStop-Motions forgnittingMachines; and I do declare the following to beafull, clear, and exact descri tion of the invention, ersskilled in theart to which it appertains tomake and use the same.

yarn controllers for textile machinery, and relates more particularlyto' an" automatic stop-motion for ,rib-lmitting machines, and

,1s especially designed as an improvement I? which Letters Patent weregranted May7 l907, Number 853,032.

The object of the invention-is to providea simple, practical andefficient mechanism of this character, whereby the machine will beautomatically stoppedshould the yarn be come knotted -or' tangled, orwhen it is stretched too tight.

Y In the accompanying drawings: Figure 1 1s a view in side elevation ofa mechanism embodying my improvements detached from the machine; Fig.2is a rear elevation; Fig. 3 is a plan view of the supporting arm for edable guides; 4 is a'horizontal section taken on the line on line 55 ofFig. 1, and, Figs. 6, 7 and 8 are detail perspective views ofcertainparts of the device.

. Referring to the drawin fora. more particular description of theinvention the nudevice by means of which themacln'ne maybe stopped.This. device comprises a horizontally disposed shifting rod 2 arrangedto work through guide members 3, preferably in the form of lugs risingfrom the u per face of an 'part 0 a horizontal bracket 5, adjustab ysecured to-theframe orting member of the stop mechanism. he outer end ofsaid shifting rod may beconnected with the belt shifter of the mm hiacket --7-.- Extending chine in'any suitable manner (not shown).

The" improved stop mechanism 6 is 'supriled; fi'om-the. machine by ahorizontal -"';vert1callythrough an opening the adjustable v ISpecification of Letters ratent. J Application filed September so, 1907.Serial No. a95,175.

This invention relates toimprovements in 44f.of Fig. 1; Fig.

Au'rom'rm s'ror-norron non xm'rrmq-macnmns.

' Patented July as, 1903.-

equivalent means is an upright supporting member, 9, which has fixedupon ts lower end a cross-head 10, on which the yarn bobverticallytherein byaset screw 8, or other ceive the yarn and to serve asdetectors for v I knots, slugs, motes and other abnormal enlargements inthe yarn. This cross-bar or yoke is secured to or formed upon a' blockor head, 14, through which the supporting member, 9, extends. Hinged tothe arms of the yoke, which are held normally m an moperative position bthe yarn, and which, should the yarn break, will fall by gravity anddisengage a latch device, 17,'from 18, which latter in turnwilldescendand actuate a lever, 19, pivoted intermedi'ately of its ends on thehorizontal bracket, 5. The free, end {of this lever is adapted to be en-'gaged normally in a notch 20 formed in the inner end of the shiftingrod, 2, '.when said rod is set. This rod is provided "with-a coil orother actuating spring, 21, so that when the free end of the lever isdisengaged from its inner end the spring will effect endwise' movementthereof and stop the machine.

' Each' of the tri devices, as shown, is formed froma sing e piece ofwire or other suitable material and comprises a straight horizontalportion 23 which of the arms of the yoke 12, angles at its inner end toform a curved trip fin er 24. The opposite end of said device is ent atright angles to form an arm 25, which is bent alternately and laterallyin op .posite directions at'its free end to form a lu rality of.straight substantially plarallel or fingers 26, the purpose of w ich'will be disclosed. w

A horizontal disposed guide member, 27, is fixed to the supportorupright' above the trip devices and is provided at each end with a p urality of vertically spaced inwardly pro- 'jecting guide hooks orfingers 28 between a which are adapted to be received the parallel.26,'of the'trip devices, 16. A

bars or fingers,

horizonta y dis osed support, 29, is also arranged'above t e guidemembers and has as at 15, are tripping devices, '16,

a 1 drop weight,

is hmged to one is bent at right.

ars

' pivoted toits-endshorizontally disposedguide members, 30, referably inthe form of wires bent or coile near their free ends to form eyes 31 toreceive the yarn.

In practice, the yarn is passed upward in the longitudinal slots orrecesses, 13, in the cross-bar or yoke, 12, thence through the ide hooksor fingers, 28, of the guide members 27 holding the arms of the tripdevices, 16, in an inoperative position, but should the yarn break andthe trip devices be thereby released, they will be caused to'fall byravity and their fingers strike the outward y bent ends of projections,32, of the latch. The latter i s-in the form of a substantially U-shaped plate, 33, the parallel arms, 34, of which are pivoted as at, 35,to opposite sides of the block or head 14. The connecting portion, 36,of the U-shaped plate is adapted to have its inner edge seat in anannular notch, 37, formed in the drop weight, so as to hold the latterin an elevated position. The drop weight is here shown in the form of acylindrical rod mounted to slide in alining openings or apertures in theblock or head, 14, an through corresponding apertures in the head of thehorizontal gyide, 27, and so as to strike or engage the pivot end of thelever, 19, when the latch is disengaged from its notch. The inner orpivot end of this lever is preferably flattened.

-' Arranged upon the upright supporting member, 9, at or near the upperend thereof is a horizontally disposed arm, 38, which has mounted uponits free end two yieldable guides, 39. These guides are here shown inthe form of hooks pivoted upon screws, 40, and between friction washers,41. Tension springs, 42, :are arranged between the heads of the screwsand the outermost washers, so as to force the latter against the hooksor supportin elements and thus hold them in their norma horizontalpositions.

A tension actuated trip device, 43, is arranged to slide longitudinallyof the upright supporting member, 9, and to trip the latch device, 17,so as to sto the machme, should the yarn become un or abnormal tension.This device comprises an upright rod or member, 44, bent at its upperend to form a horizontally disposed projecting head or portion, 45, anda depending leg or portion, 46. This device also .comprises a lowerupright member, 47, which is adjustably connected with the lower end ofthe upright rod or member, 44, in any suitable manner and is bentupwardly at a suitable angle at its lower end to form anupwardlyextending obli uely disp osed trip finger 48 to engage t e latch.

ieldable arms, 49, are ivoted at their inner ends to the inner end ofthe horizontallydisposed arm, 38, and are disposed approxi- -mately atri ht angles therewith. These are provided at their pivot ends with cams50 adapted to engage the projectin r head or portion, 45, of the tensionactuate tri device, 43, when swung outward by an a normal tension beingexerted on the yarn, raising said trip device and tripping the latch.

. .The. operation of my invention is as follows: The yarn passes fromthe bobbins, 11, forwardly through the detectors, thence upwardlythrough the uide hooks or fingers, 28, of the guide mem er, 27, thencethrough the eyes, 31, of the guide, 30, and thence over the free end ofthe yieldable arm and fingers, 49, and 39, respectivel to the machine.The yarn in passing rom the detectors through the machine travels in, anangular direction, and when a knot, tangle or other enlargement upon theyarn reaches the detectors, that ortion of the yarn between the latterand t e machine becomes stretched and causes the yieldable guides andarms, 39 and 49, respectively to swing outwardly, the cams at the pivotends of the arms engaging the projecting head or portion of the upperupright rod or member of the trip device 43, causing saiddevice to tripthe latch an release the drop weight. When the drop vlreight is releasedit strikes the pivot end'of t e when the atter is caused to move endwisea predetermined distance by its actuating spring, and stop the machine.The trip devices, 16, are normall held in inoperative position by theyarn ut should the latter break, they will be released and trip thelatch.

Having thus described my invention, what I claim as new and desire tosecure by Letters-Patent, is:

1. A stop-motion for textile machines, comprising an upright support, acontroller to stop the machine, a releasing lever for the controller, aknot catcher, a drop weight to operate the lever, a latch to normallysupport the weight in an elevated position, an upright lori itudinallymovable trip device carried by the support, said device aving ahorizontally rojecting portion at its upper end, and yiel able yarnguiding arms pivoted to the support, said arms having cams at ever, 19,and releases the free end thereof from enga ement with the rod ormember, 2,

their pivot ends to engage the projecting orthe controller, a latchdevice to support the weight, an upright longitudinally movable tripdevice sustained by the support, said device having'a horizontally proectin por-' tion at its u per end, and an upward extending trip er atits lower end, the atter of which is ada ted to engage the latch dev.ce,and yielda le yarn guiding arms pivoted --to the support, said armshaving cams at their pivot ends to engage with the project- 5 ingportion of said mp device to raise the latter when saidarms are swungdownwardly by abnormal tension'being exerted thereon.

In testimony whereof I have hereunto set my hand in presence of twosubscribing wit- 'nesses.

JOSEPH B, RHODES.

Witnesses: I

SAMUEL S..C0UFFER, Jr., E; M. SNAVELY.

